Georgiy Timofeyevich Dobrovolsky (Russian: Гео́ргий Тимофе́евич Доброво́льский; June 1, 1928 – June 30, 1971) was a Soviet cosmonaut who served on the three-man crew of the Soyuz 11 spacecraft. They became the world's first space station crew aboard Salyut 1, but died in space due to asphyxiation due to an accidentally opened valve. They were the first and, as of 2018, the only humans to have died in space.

Takao Doi (土井 隆雄 Doi Takao, born September 18, 1954) is a Japanese astronaut and veteran of two NASA space shuttle missions. Doi flew as a mission specialist aboard STS-87 in 1997, during which he became the first Japanese astronaut to conduct a spacewalk.

Pedro Francisco Duque Duque, OF, OMSE (Madrid, 14 March 1963) is a Spanish astronaut and aeronautics engineer, currently serving as Spain's Minister of Science, Innovation and Universities. He was the first Spanish astronaut. Duque underwent training in both Russia and the United States. His first spaceflight was as a mission specialist aboard space shuttle mission STS-95, during which Duque supervised ESA experimental modules. In October 2003, Duque visited the International Space Station on board of a Soyuz TMA Ship for several days during a crew changeover. The scientific program of this visit was called by ESA/Spain Misión Cervantes.

Lev Stepanovich Dyomin (Russian: Лев Степанович Дёмин; January 11, 1926, in Moscow – December 18, 1998, in Zvyozdny Gorodok) was a Soviet cosmonaut who flew on the Soyuz 15 spaceflight in 1974. This spaceflight was intended to dock with the space station Salyut 3, but the docking failed.

Vladimir Aleksandrovich Dzhanibekov (Russian: Владимир Александрович Джанибеков, born 13 May 1942) is a former cosmonaut who made five flights. Dzhanibekov made five flights: Soyuz 27, Soyuz 39, Soyuz T-6, Soyuz T-12 and Soyuz T-13. In all he had spent 145 days, 15 hours and 56 minutes in space over these five missions. He had also performed two EVAs with a total time of 8 hours and 35 minutes. In 1985 he noted the effects of the tennis racket theorem, subsequently also called the Dzhanibekov effect, by showing that an object's second principal axis is unstable while in free-fall rotation.

Dr. Reinhold Ewald (born December 18, 1956) is a German physicist and ESA astronaut. In 1990, he was selected to the German astronaut team, training for the Mir '92 mission. He was the backup of Klaus-Dietrich Flade for the Soyuz TM-14 mission. In 1995 he began training for the second German Mir mission. In February 1997 he flew to the space station Mir with Soyuz TM-25, spending 20 days in space. He performed experiments in biomedical and material sciences, and carried out operational tests in preparation for the International Space Station.

Léopold Eyharts (born April 28, 1957) is a French Brigadier General in the French Air Force, an engineer and ESA astronaut.

Muhammed Ahmed Faris (Arabic: محمد أحمد فارس‎ Muḥammad ʾAḥmad Fāris; born 26 May 1951) is a Syrian military aviator. He was the first Syrian and the second Arab in space.

Bertalan Farkas (born August 2, 1949) is the first Hungarian cosmonaut and the first Esperantist in space. He is currently the president of Airlines Service and Trade. With Charles Simonyi's space travel, Farkas is no longer the only Hungarian who has been to space (he is still the only astronaut, as Simonyi flew as a space tourist).

Jean-Jacques Favier (Born April 13, 1949) was a French engineer and CNES astronaut who flew aboard the STS-78 NASA Space Shuttle mission. Favier was due to fly aboard the Columbia mission in 2003, but later signed out of the mission. Jean-Jacques Favier has been Deputy Director for Space Technology and Deputy Director for Advanced Concepts and Strategy at CNES, Director of the Solidification Laboratory at the French Atomic Energy Commission and Research Program Director at the International Space University.

Major general Fei Junlong (simplified Chinese: 费俊龙; traditional Chinese: 費俊龍; pinyin: Fèi Jùnlóng; born 1965) is a Chinese military pilot and an astronaut. He flew on the second manned spaceflight of the Shenzhou program. Fèi was selected for the CNSA astronaut program in 1998. He was in the final five selected for the Shenzhou 5 flight. He was the commander on the Shenzhou 6 flight that launched October 12, 2005, with Niè Hǎishèng serving as flight engineer). They landed on October 17, 2005.

Konstantin Petrovich Feoktistov (Russian: Константин Петрович Феоктистов; 7 February 1926 – 21 November 2009) was a Soviet cosmonaut and an eminent space engineer. Feoktistov also wrote several books on space technology and exploration. The Feoktistov crater on the far side of the Moon is named in his honor.